Cam-shaft casing for internal-combustion engines.



L, COATALEN.

CAMSHAFT CASING'FOR lNTERNAL COMBUSTION ENGINES.

APPLICATION FILED SEPT. 6. 1916.

1,235,110, Patented July 31, 1917.

Znuenifir:

, L0u' Cami/(537% UNITED STATES PATENT OFFICE.

LOUIS COATALEN, OF WOLVERHAMPTON, ENGLAND, ASSIGNOR OF ONE-HALF TO SUN- IBEAM MOTOR CAR COMPANY LIMITED, 015 WOLVERHAMPTON, ENGLAND.

CAM-SHAFT CASING FOR INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

Patented July 31, 191 '7.

Application filed September 6, 1916. Serial No. 118,780,

To all whom it may concern:

Be it known that I, LOUIS COATALEN, a subject of the King of Great Britain, and resident of WVolverhampton, in Staffordshire, England, have invented certain new and useful Improvements in Cam-Shaft Casings for Internal-Combustion Engines, of which the following is a specification.

On some internal combustion engines the cam shaft is contained in a casing which is detachable from the engine, and this is usually the case where the cam shaft is arranged over the cylinders. It is the object of the present invention to provide an improved construction wherein the interior is easily accessible, and lubricant is prevented from passing down the tappet guides.

In this construction the tappets are guided in the lower wall of the casing and between each tappet and its cam is a rocking lever. Oil is supplied to the interior of the casing, and in many existing constructions this leaks down the tappet guides, which is objectionable.

The accompanying drawing is a cross section of a detachable cam shaft casing constructed in accordance with this invention.

The casing A is, as usual, provided with bearings for carrying the cam shaft, the axis of which is shown at B. The cams on this shaft actuate tappets, one of which is indicated at C, and between each tappet and its cam is a rocker or valve lifter D which is employed to reduce the side thrust on the tappet. One or more rockers D are pivoted at D to a detachable plate E which closes a large aperture in the side of the casing. It will be clear that by unscrewing the screws E the plate E and the rocker or rockers carried thereby can be withdrawn, disclosing the interior of the casing.

In the bottom of the casing is formed a boss F which projects above the bottom wall A and this boss forms or carries a tap pet guide or bush G. In the bottom wall A is formed an outlet H and to this may be attached a drain pipe of any suitable nature. Thus it will be clear that oil leaking into the casing will be drained away through the outlet H before it can reach up to the height of the tappet boss G and in this way leakage down the tappet guides or their equivalent is prevented.

If desired a plate such as E may be provided at each side of the casing, thus making access to the interior still more easy.

By this invention a greatly improved detachable cam shaft casing is obtained in which leakage of oil down the tappet guide is overcome while the interior is easily accessible.

What I claim as my invention, and desire to secure by Letters Patent, is:

In an internal combustion engine, the combination of a detachable camshaft casing, a camshaft carried by said casing, said casing having an aperture in the wall thereof, a detachable cover plate over said aperture, a rocker pivoted to said cover plate, the casing having a boss projecting above the bottom thereof, a tappet guided in said boss, said casing having an oil drain in its bottom, substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

LOUIS COATALEN.

Witnesses:

JOHN MARSTON,

Copies of this patent may be obtained for live cents each, by addressing the Commissioner of Patents, Washington, D. G, 

